![thread stuck in device driver psu thread stuck in device driver psu](https://community.amd.com/sdtpp67534/attachments/sdtpp67534/drivers-and-software-discussions/8631/1/controller_AMD_Web.png)
I'm willing to live with that small drop-off for the increased stability.
THREAD STUCK IN DEVICE DRIVER PSU WINDOWS
I reran the Windows Experience Index and the hard drive index dropped from an outstanding 7.6 to a still amazing 7.1 (for anything over 7, you're doing well). I don't know for sure if that's true, but it probably is. Now as for performance, they do talk about certain features like NCQ being available only in AHCI vs. Most of the newer "Green" drives manage their own power internally, beyond the control of the OS. As for power management, the only control the OS has over drive power management is idling it or turning it off, as far as I know, which has been around since the days of IDE and probably long before it too. The main advantage of AHCI over IDE is the ability to hot-plug drives, but this is mainly useful for external eSATA drives rather than internal SATA ones.
![thread stuck in device driver psu thread stuck in device driver psu](https://community.amd.com/sdtpp67534/attachments/sdtpp67534/drivers-and-software-discussions/14485/1/details.png)
I only started having this problem after upgrading a notebook from a brand-name HDD (AHCI) to Corsair SSD (AHCI). Hopefully it's something that Corsair is looking into. But of course you're right, it's all pointless if the drives have severe freeze-up issues. There are supposedly other benefits to AHCI, such as power management, command queuing, etc.
THREAD STUCK IN DEVICE DRIVER PSU DRIVERS
So let go of the AHCI drivers and don't feel you're missing out on anything, because you aren't! The performance using IDE is just as good as AHCI performance, as I've tested under both ATTO and CrystalDiskMark benchmarks. I think most of us were too concerned that if we don't have AHCI drivers, then we won't have TRIM support either, but that's not the case at all, you can enable the TRIM support under the IDE drivers too. There's no disadvantage in using the IDE drivers, as even TRIM support is available through the IDE drivers, you just have to enable it as per this thread: The only thing that fixed the problem was to disable the AHCI in the BIOS, and reboot using IDE drivers again. With AHCI enabled, we tested disabling TRIM, and write-caching: neither fixed the problem. It was determined that the culprit is the AHCI drivers. For those of you having trouble with the random freeze-ups on the Corsair SSD's, after some testing done in this thread: